Figure 2: Skin mass from a dog (Diff-Quik stain, 20x)

 
Fig2_May2015_answer

The inflammatory cells within the aspirate include neutrophils, macrophages (arrowhead), and occasional multinucleated macrophages (arrow). A keratinized squamous epithelial cell (asterisk) is also present in this field. The cell appears to have a central “clear” area corresponding to a faded nucleus and may be a so-called ghost cells. This suggests that the underlying cyst could be a matrical cyst, which is more likely to have ghost cells.

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